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Models => Sportbikes => Topic started by: ILL CLICK ENT on August 26, 2008, 07:06:40 AM

Title: weak spark at coil
Post by: ILL CLICK ENT on August 26, 2008, 07:06:40 AM

Has anyone had the problem of a weak spark at the coil? I Replaced the coil and still has weak spark.
Bike turns over but wont start. My voltmeter shows spark coming out of plug end but wont fire plug.
Also have changed plugs to make sure wasnt plug. Any help?

Title: Re: weak spark at coil
Post by: drummerben on August 26, 2008, 02:20:19 PM

I hope your joking. I am having the same problem and am waiting on a new coil to be sent to me. I was sure that this would fix my issues, but you are still having weak spark problems? A friend of mine also replaced the diode...maybe try that as well. He also said that all the grounds were not very well grounded. What type of plug are you using? I had to switch to a hotter plug...a d6ea ngk.


Things to try, anyway.

Title: Re: weak spark at coil
Post by: ILL CLICK ENT on August 26, 2008, 03:38:54 PM

No Sir I'm not joking. I order new coil and still did same.
I'm running the stock plug but upgrading it wont matter just
yet if it wont spark at all. I will check the grounds. I was also
told it may be the cdi. One of us has to come up with an answer.

Title: Re: weak spark at coil
Post by: drummerben on August 29, 2008, 05:15:28 PM

Ok, so i put in the new ignition coil today and the bike started right up. After taking it out for a ride, the bike started surging like the spark was either weak or intermittent. I thought maybe the carb settings were out, so i adjusted those, but received the same results. The plug looked fine, also. My friend suggested that I install a restrictor to the coil. He said that this will regulate the spark to the plug. Not sure, but we'll see.

How's yours going?

Title: Re: weak spark at coil
Post by: drummerben on September 03, 2008, 04:37:17 AM

I discovered that my bike was running way too lean due to a vaccuum leak at the intake. I put a new clamp on the air hose at the carb and the bike ran fine. I am still having spark issues, I think. I was out test running my bike. I pulled to a stop light and the bike died on me. I tried and tried and tried to get it started back but couldn't. The engine would turn over fine, but no fire. I am going to replace the reg/restrictor per my friend's instructions and see how that helps.

I am glad that I got one component of my problems fixed. One day I will have this thing licked. Maybe God is teaching me patience?

Title: Re: weak spark at coil
Post by: ILL CLICK ENT on September 05, 2008, 10:35:42 AM

It's good to see u got some of the probs workd out. I had to order a new cdi mod. On the old one if I tapped on it while turning the engine over it would give me a good spark at the plug. As long as tapped on it. So the new cdi should b here this weekend. Will let u kno if it solves probs. By the way Patience is the most inportant tool to success.

Title: Re: weak spark at coil
Post by: drummerben on September 05, 2008, 02:51:17 PM

Its good to know that the cdi could be the solution. I had actually called the dealership with my problem and they had suggested the cdi. They shipped me one today. Hope this fixes it. Let me know.

Title: Re: weak spark at coil
Post by: ILL CLICK ENT on September 07, 2008, 12:47:56 AM

My cdi came on sat. pluged it up and she started right up.I need to adjust the carbs a bit. But the cdi was definetly the prob. I hope ur's is a simple as that. Keep me posted on how it works for u.

Title: Re: weak spark at coil
Post by: drummerben on September 07, 2008, 05:03:04 AM

Great News! Hey, what's your max speed so far?

Title: Re: weak spark at coil
Post by: drummerben on September 07, 2008, 05:25:36 AM

Let me know how the extended ride is. This is where I got into trouble. The bike would do fine for about 15 min or so and then just start running crappy (weak/no sparkor just cut out on me. If you can run for an extended ride and still have a smooth ride then we are in business.

Title: Re: weak spark at coil
Post by: ILL CLICK ENT on September 09, 2008, 10:27:55 AM

I have not put her on the highway yet but plan on it 2morrow. So I will let u know the top and how it rode. How is urs coming along?

Title: Re: weak spark at coil
Post by: drummerben on September 14, 2008, 02:24:59 PM

How has the bike been running lately? I'm still waiting on the cdi. Hope this fixes it for me. Let me know how yours is doing.

Title: Re: weak spark at coil
Post by: ILL CLICK ENT on September 15, 2008, 09:41:12 AM

What's going on? The bike has been running great ever since the cdi. She runs in the mid 70'smph have not taken to redline.
Don't want to out-rev engine. Still need to adjust carb fine tuning. Other than that she runs great. Hope the cdi solves ur problems. Keep me up on it.

Title: Re: weak spark at coil
Post by: drummerben on October 04, 2008, 03:08:17 PM

I know its been a while...just been too frustrated with my bike to post my problems. I'm still having difficulty with getting a good spark. I've replaced just about everything in the electrical system. Scooter Dynasty is sending me a new stator to see if that is the problem. At this point I'm almost ready to throw in the towel. With the cold weather fast approaching, I'm not ready to throw money at it and send it to a repair shop. I'll just sit and wait for the parts to come from Scooter Dynasty (that's all they're willing to do really) and see if that takes care of it. I suppose that eventually I will have replaced virtually every part on the bike except the frame. Surely it will work at some point...right?

Here's hopin'...

Title: Re: weak spark at coil
Post by: ILL CLICK ENT on October 04, 2008, 04:12:53 PM

Remember we talked about patience? There are only a few more things that can be replaced so lets roll with it. Have you tried a high rated spark plug? More spark is sometimes needed. I got this post out of one of our other subject post. Try the better plug as well. Won't hurt at all.
 
Re: What does it take for you to start your bike? (+bonus q)
by kf4ewo on Thu Oct 02, 2008 10:27 pm

Been a way for a while but replacing my wife plug with a NGK iridium DR8EIX #6681 spark plug has made a world of difference in starting her bike.

Old plug - Choke for one minute, idle for another 2, and then hesitation for the first couple of miles untel fully warm. restarts while warm would take quite a while if it did not sit for about 5 minutes after shutting off.

New plug - Choke for about 10 seconds, idle for about 30, then ride. Temp here when made the change was 70's in the mornings, now in the low 50's and no change in starting. I belive the new plug and 93 octain gas avalible around here has a lot to do with how well it does.

Replaced the battery about a week ago and seems to fire a lot faster when starting and idles a lot smoother while cold. Battery is from Sears, a 9-b (sears part number 44356). Also added a battery tender for the winter months to keep battery from draining.

My dad alway told me growing up never to adjust you carb for elevation until you were going above 8000 feet. This is based on 1950's to 1970's carb cars and trucks, but it is only what I was taught while growing up.

Hope the info helps.

KF4EWOkf4ewo
 
Posts: 8
Joined: Wed Jul 09, 2008 10:35 pm
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Title: Re: weak spark at coil
Post by: drummerben on October 04, 2008, 05:09:16 PM

Yeah--tried a hotter burning plug, but the problem is actually getting the spark. Even a better plug doesn't work. I should be getting the new stator in a week or so...we'll see.

Title: Re: weak spark at coil
Post by: ILL CLICK ENT on October 06, 2008, 06:36:40 AM

ok keep me up.

Title: Re: weak spark at coil
Post by: drummerben on October 08, 2008, 07:08:13 PM

Just got my stator in today. Having never replaced one of these before, I didn't really know what to expect. After getting the cover off, about half a quart of oil came spilling out. Certainly didn't expect that...and was a little worried but this is normal. My problem now is that I have to replace the gasket around the side cover that cracked when I took it off (which wasn't sent with the stator). So now I have to call Scooter Dynasty to get this (another week). Hopefully this will fix my problem. Surprisingly it was easy to replace once I figured out the wire routings. My plan is to go ahead and change the oil once I get the new stator on and the gasket replaced. Wish me luck!

Title: Re: weak spark at coil
Post by: ILL CLICK ENT on October 09, 2008, 03:44:46 PM

That's what im talking bout. Yes the oil is normal. I had an oil leak on the same side too. I used rtv silicon from autoparts store it works best it is gasket maker. I have no leaks now.

Title: Re: weak spark at coil
Post by: drummerben on October 11, 2008, 12:53:20 PM

So I installed the stator, but the bike has a new problem. Now it won't turn over at all. It acts as if the battery is dead, but its not (completely charged). Is there a seperate adjustment that I need to make when the stator is installed? I put everything back the way it came off and plugged it in the correct plugs...what gives?

Title: Re: weak spark at coil
Post by: drummerben on October 12, 2008, 08:51:55 AM

Well...
Good News!! The bike FINALLY started! It was most definitly the stator. The problem I last posted about the bike seeming as if the battery was dead was a false alarm. I believe what happened is when I changed the stator, it wasn't lubed. So when I went to start, it didn't have the lubrication to spin. After a few times of trying, I finally started. Now it starts immediately every time. I took it out and it runs very smooth.

Hoorah!

Bad news...
I had just cancelled the insurance on it because I wasn't going to be able to drive it...also I still haven't registered it. Guess I need to take care of some of that before I ride it again.

Title: Re: weak spark at coil
Post by: Marc on October 12, 2008, 09:32:25 AM

Congrats on getting it fixed! I just took the insurance off of mine since it's sitting broken in the garage. We've got half a foot of snow on the ground too, so it seems riding season is over. I'd just like to get it fixed before my warranty runs out.

Title: Re: weak spark at coil
Post by: ILL CLICK ENT on October 13, 2008, 05:06:34 PM

Great job on getting it started. :?:  Where are u Marc?

Title: Re: weak spark at coil
Post by: Marc on October 13, 2008, 07:02:54 PM

In the mountains in Southwest Montana. It mostly melted today, but still. it's too early for that crap.

Title: Re: weak spark at coil
Post by: Myth on October 14, 2008, 06:29:21 AM

Yeah, screw the snow...  That's why I live in Texas...  Either it's ice or it's nothing.  :twisted:   Do they make snow chains for the Zong???

Yo Drummer, way to go on the fix!  Yeah, you might take care of that stuff first...  You don't wanna be like me, I've been riding the whole time without a license...     Well I haven't got caught yet, but I can't ride on base...

Title: Re: weak spark at coil
Post by: drummerben on October 14, 2008, 04:37:08 PM

Yeah, rides like a dream (as much as it can). Took it out today for an extended drive...did well.

Title: Re: weak spark at coil
Post by: Myth on October 15, 2008, 05:49:16 AM

What kind of speeds you achiving now drummer?

Title: Re: weak spark at coil
Post by: drummerben on October 15, 2008, 03:15:43 PM

didn't really want to push it too far, so I got to about 70. No drags or other problems.
Just fyi--changed to a denso iridium--runs very smooth.

Title: Re: weak spark at coil
Post by: bmotoco on August 16, 2012, 04:08:27 PM

Quote from: ILL CLICK ENT on September 07, 2008, 12:47:56 AM

My cdi came on sat. pluged it up and she started right up.I need to adjust the carbs a bit. But the cdi was definetly the prob. I hope ur's is a simple as that. Keep me posted on how it works for u.

Where did you guys find the CDI's?
Thanks!